PSU recommendations...

[hagatha]

With a new build right around the corner, I'm still deciding on the PSU. What I have in mind is the CORSAIR HX620w, from what I've read its a pretty good one.

I'll be running quite a few thing in the is system

eVGA 680i mobo w/conroe e6600
SLI vid cards (now 7900gt's, eventually 8800gt's)
Sound card (when I find one I like)
3 (maybe 4) HDD
DVD & Floppy
6 120mm fans
MCP655 Pump (water cooled)

What do you think?
Any links to good reviews on PSU's?
Any first hand experience with this PSU?

Thanks
Lee

[Mr.Ferrari]

Awesome PSU. OEM Seasonic unit. Hence being one of the most quietest 600+watters on the market. Abundance of power. Severly underrated. This powersupply can do a whole lot more then its 620w rating suggests. And to top it off a single 12v rail. I know it shows 3 rails. But in design, it is a true single rail.

One of the only 600w psu's I would ever suggest a high end dual card setup.

7900GT's will be no problem. 8800GTS SLI..should be fine. As long as your not planning on overclocking.

[fleeingpepper]

I'm not saying that's a bad PSU at all, but isn't it recommended that you don't get modular PSU's? I think it would be fine, but keep the plugging and unplugging to a minimum. To keep resistance and interference to a minimum.

[newbuilder14]

^^ I don't think modular PSUs are a problem at all. I actually prefer them for wire management. That Corsair power supply is an outstanding unit.

[Mr.Ferrari]

Modular psu's are only bad, when implemented wrong. Yes you will never get rid of that bit of resistance. But a properly designed powersupply will more then make up for it. I know of a lot of modular psu's that I would easily take over high end non modular units.

If you do plan on some overclocking, I would definately suggest something beefier. But if not 8800GTS sli shouldnt be a problem for it.

One powersupply that will handle overclocking, and at the same price would be this unit:
Etasis 750W $171.99

If you need super silence, corsair is the win. But unless your designing your build ground up as a Silent PC. You wont notice the noise difference between it and this Etasis. The etasis is also a much beefier psu.

[newbuilder14]

Are you referring to electrical resistance? How does this have to do with modulal power supplies? The connectors? What are you talking about..?

[Mr.Ferrari]

Originally Posted by newbuilder14 Are you referring to electrical resistance? How does this have to do with modulal power supplies? The connectors? What are you talking about..?

http://hyperphysics.phy-astr.gsu.edu...ric/resis.html

Ohms Law

The resistance of the modular interface reduces the performance of the power supply, because resistance causes voltages to drop. No doubt any modular connection causes resistance. Thats fact. But in a powersupply like the Corsair, the voltage droop was actually lower then say a high end Pc Power&Cooling unit. Thats saying alot.

Some low end units also have poor modular connectors. This is sometimes due to the small pins inside each connector housing.

The resistance between the points of a modular connector is about equivalent to an extra foot of cable or less.